2173733217 has 6 divisors (see below), whose sum is σ = 3139836882. Its totient is φ = 1449155472.

The previous prime is 2173733213. The next prime is 2173733227. The reversal of 2173733217 is 7123373712.

It can be written as a sum of positive squares in only one way, i.e., 1671256161 + 502477056 = 40881^2 + 22416^2 .

It is not a de Polignac number, because 2173733217 - 2² = 2173733213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2173733213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120762948 + ... + 120762965.

It is an arithmetic number, because the mean of its divisors is an integer number (523306147).

Almost surely, 2^2173733217 is an apocalyptic number.

It is an amenable number.

2173733217 is a deficient number, since it is larger than the sum of its proper divisors (966103665).

2173733217 is a wasteful number, since it uses less digits than its factorization.

2173733217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241525919 (or 241525916 counting only the distinct ones).

The product of its digits is 37044, while the sum is 36.

The square root of 2173733217 is about 46623.3119479944. The cubic root of 2173733217 is about 1295.3945949969.

The spelling of 2173733217 in words is "two billion, one hundred seventy-three million, seven hundred thirty-three thousand, two hundred seventeen".